[llvm] [SPIR-V] Order alias-decl instructions so definitions precede uses (PR #203699)

[Arseniy Obolenskiy via llvm-commits]

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@@ -0,0 +1,25 @@
+; RUN: llc -O0 -mtriple=spirv64-unknown-unknown -verify-machineinstrs --spirv-ext=+SPV_INTEL_memory_access_aliasing %s -o - | FileCheck %s
+; TODO: add spirv-val once SPV_INTEL_memory_access_aliasing is supported by it.
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aobolensk wrote:

Other two tests you have modified seem to be successfully using `spirv-val` already. Is there any specific capability currently unsupported there?

https://github.com/llvm/llvm-project/pull/203699